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Finding the Fourth Proportional to 1,118,832.81, 1,543,584.27 and 731,869.11

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Solution

The fourth proportional to 1,118,832.81, 1,543,584.27 and 731,869.11 is: 1,009,714.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,832.81 : 1,543,584.27 = 731,869.11 : x
  2. Step 2: Convert to fraction form
    1,118,832.81/1,543,584.27 = 731,869.11/x
  3. Step 3: Cross multiply
    1,118,832.81x = 1,543,584.27 × 731,869.11
  4. Step 4: Simplify right side
    1,118,832.81x = 1,129,701,645,894.90
  5. Step 5: Solve for x
    x = 1,129,701,645,894.90/1,118,832.81
  6. Step 6: Final answer
    x = 1,009,714.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.